Shure KSM109 - Manual (Page 6)

5
English
SPECIFICATIONS
Cartridge Type Permanently Biased Condenser
Frequency Response 20–20,000 Hz (see Figure 2)
Directional Polar Pattern Cardioid (see Figure 3)
Output Impedance 150
Ω
(actual)
Attenuation Switch 0 dB or 15 dB attenuation
Phantom Power 48 Vdc
±
4 Vdc (IEC–268–15/DIN 45 596),
positive pins 2 and 3
Current Drain 5.2 mA typical at 48 Vdc
Common Mode Rejection
≥
50 dB, 20 Hz to 20 kHz
Polarity Positive pressure on diaphragm produces positive
voltage on output pin 2 relative to pin 3
Dimensions and Weight 24 mm (0.950 in.) diameter, 162 mm (6.375 in.) long;
195 grams (6.9 oz.) (see Figure 4)
Sensitivity (typical, at 1000 Hz;
1 Pa = 94 dB SPL)
–41 dBV/Pa
Self–noise (typical, equivalent SPL;
A-weighted (IEC 651))
19 dB
Maximum SPL*
(Attenuator on)
5000
W
load
2500
W
load
1000
W
load
150 (165) dB
144 (159) dB
139 (154) dB
Output Clipping Level*
5000
W
load
2500
W
load
1000
W
load
15 dBV
9 dBV
3 dBV
Dynamic Range
(Attenuator on)
5000
W
load
2500
W
load
1000
W
load
133 (136) dB
128 (130) dB
122 (125) dB
Signal to Noise Ratio** 75 dB
*20 Hz to 20 kHz;THD < 1%. THD of the microphone preamplifier when applied input signal is equivalent to the cartridge
output at specified SPL.
**S/N ratio is the difference between 94 dB SPL and equivalent SPL of self-noise A-weighted.